I haven't seen any advertising claiming rcd protection is the " be all and end all " solution to electric shock danger.

When I say all equipment should be rcd protected, I actually meant in the domestic situation. Obviously some equipment in industry will have its exclusions

Single RCD main switches never really took off in NZ. Most sparkies here will have a few in the domestic DB ( 2 lights & 2 power ) or use RCBOs. Eliminating the "plunged into darkness" scenario.

RCDs are just one more tool to minimise electric shock risk and shouldn't be ignored just because of a little nuisance tripping.